<template>
  <view class="viewport">
    <!-- 推荐封面 -->
    <!-- 记得把封面保存到 bannerPicture  -->
    <view class="cover">
      <image :src="bannerPicture"></image>
    </view>
    <!-- tab栏 -->
    <!-- 猜猜我哪里的数据不对  -->
    <view class="tabs">
      <text
        class="text"
        v-for="(item, index) in recommendList"
        :key="index"
        :class="{ active: index === activeIndex }"
        @tap="changeTabs(index)"
      >
        {{ item.title }}
      </text>
    </view>
    <!-- 列表内容 -->
    <scroll-view
      scroll-y
      class="scroll-view"
      @scrolltolower="handleScrolltolower"
      v-for="(item, index) in recommendList"
      :key="index"
      v-show="activeIndex === index"
    >
      <view class="goods">
        <navigator
          hover-class="none"
          class="navigator"
          v-for="goods in item.goodsItems.items"
          :key="goods.id"
          :url="`/pages/goods/index?id=${goods.id}`"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading">正在加载...</view>
    </scroll-view>
  </view>
</template>

<script>
import { getAllGoodsAPI } from '@/api/home'
export default {
  data() {
    return {
      // 背景大图
      bannerPicture: '',
      // 当前显示的tab栏
      activeIndex: 0,
      // 列表数据
      recommendList: [],
    }
  },
  onLoad({ type }) {
    const urlMap = {
      1: { title: '特惠推荐', url: '/hot/preference' },
      2: { title: '爆款推荐', url: '/hot/inVogue' },
      3: { title: '一站买全', url: '/hot/oneStop' },
      4: { title: '领券中心', url: '/hot/new' }, // 后端未提供，暂用新鲜好物url
      5: { title: '新鲜好物', url: '/hot/new' },
    }
    this.current = urlMap[type]
    uni.setNavigationBarTitle({
      title: this.current.title,
    })
    console.log(this.current)
    this.getAllGoods()
  },
  methods: {
    async getAllGoods(data) {
      const { result } = await getAllGoodsAPI(data, this.current.url)
      console.log(result)
      this.bannerPicture = result.bannerPicture
      this.recommendList = result.subTypes
    },
    changeTabs(index) {
      this.activeIndex = index
    },
    handleScrolltolower() {
      const currentData = this.recommendList[this.activeIndex]
      const { id } = currentData
      let { page, pages } = currentData.goodsItems
      if (page < pages) {
        page++
        this.getAllGoods({ subType: id, page })
      }
    },
  },
}
</script>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}
.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}
.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}
.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;
  .text {
    margin: 0 20rpx;
    position: relative;
  }
  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}
.scroll-view {
  flex: 1;
  overflow: hidden;
}
.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;
  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }
  .thumb {
    width: 305rpx;
    height: 305rpx;
  }
  .name {
    height: 88rpx;
    font-size: 26rpx;
  }
  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }
}
.goods .symbol,
.goods .decimal {
  font-size: 70%;
}
</style>